>>62665678MARK MY WORDS:
Nerissa will most likely not collab with them, following her dear Kiara senpai's advice/example.
FWMC will absolutely not even acknowledge their existence being the gold standard for what a vtuber should be in EN, literally twincest unicorns.
Biboo COULD potentially collab with them in a nicety/going with the flow kind of way, will be more or less above board.
...
Shiori will absolutely collab with them and be the one of Advent to have the "Ame" or "Kronii" moment where her hapless simps get spoken down to mercilessly and walked all over, betrayed and NTR'd, and either like it/put up with it because they're cucks, or have hardcore meltdowns for a month on /vt/ before moving on/killing themselves (or at least threatening to, and then anti'ing Shiori for the next several months until they get tired of putting in the effort).